Slipping trans after rebuild.

[BradHanks15]

@NickTransmissions got my replacement input drum in today and was going to assemble it and I found this. Just noticed it didn’t see it before. What kind of issues could this cause? And is there any way to replace just the seal or does the whole piston need to be replaced?

 

[NickTransmissions]

@NickTransmissions got my replacement input drum in today and was going to assemble it and I found this. Just noticed it didn’t see it before. What kind of issues could this cause? And is there any way to replace just the seal or does the whole piston need to be replaced?

Replace that piston. Otherwise forward clutch will burn up quick, if it even applies at all.

 

[BradHanks15]

Replace that piston. Otherwise forward clutch will burn up quick, if it even applies at all.

Thanks. Is that the forward apply piston?

 

[NickTransmissions]

Thanks. Is that the forward apply piston?

Yep

 

[BradHanks15]

Thanks.
@NickTransmissions got the drum in and was able to assemble everything up to the 3-4 pack and clearances are good for the forward pack. Put the 3-4 together with the exedy high energy clutches 5 steels 6 clutches and the clearance is huge. If I put the other steel I got in the kit with it it looks to be right under where it should be. My question is this correct and if it is where should I put the other steel in it?

 

[BradHanks15]

Disregard with the other steel in it’s at .092. The kit I bought only had 6 of each. Not sure why the clearance is so large.

 

[BradHanks15]

Top plate is .180. Clutches are .07. steels are .07. Bottom plate is .21.

 

[BradHanks15]

@NickTransmissions. Did some math over here and it looks like if I swap all my steels now with .106 steels I should get correct clearance.

 

[NickTransmissions]

@NickTransmissions. Did some math over here and it looks like if I swap all my steels now with .106 steels I should get correct clearance.

You're building a 4L60E, right? If so, yes - all 4L60Es took .106 3-4 steels. 4L65Es and 700R4s used thinner 3-4 steels, hence why you had so much clearance initially.

 

[BradHanks15]

You're building a 4L60E, right? If so, yes - all 4L60Es took .106 3-4 steels. 4L65Es and 700R4s used thinner 3-4 steels, hence why you had so much clearance initially.

@NickTransmissions makes sense. Super weird. I bought a kit made for a 03 4l60. So not sure why the thinner steels were in there. Oh well ig for sure.